77
Item Check method Criteria When failed
Chain Spring • Check visually and measure
the dimensions.
• Check visually to have no apparent setting
(deformation).
• The deformation of the
Cushion Rubber and the
Chain Spring is caused by
excessive use of the Friction
Clutch and the Limit Switch.
Operate the electric chain
hoist properly.
Otherwise it may result in bodily injury
or property damage.
CAUTION
Mandatory
Service Limit of Chain Spring for Capacity (Do
not fall short of the limit value.)
Code Capacity
Length of Chain Spring
Standard Limit value
ER2-016S
1.6t – –
ER2-016IS
ER2-020L
2t
70 67
ER2-020IL
ER2-020S
85 81
ER2-020IS
ER2-025S
2.5t 75 72
ER2-025IS
ER2-032S
3.2t 85 81
ER2-032IS
ER2-050S
5t 75 72
ER2-050IS
Replace the Chain
Spring.
Stopper
• Check visually.
Cushion
Rubber
• The stopper must be attached securely at the
third link from the no load end of the Load
Chain.
Attach the Stopper at
the third link.
Limit Lever
• Check visually and by
moving by hand.
• To have no deformation, damage and abrasion
• To move smoothly
• To have no stain
Limit Lever.
Replace the Limit
Lever.
Disassemble the Limit
Lever and clean.
Periodic Inspection
2
Electric Chain Hoist (ER2) Periodic Inspection
(to be continued)
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